Clinical trial Recruiting at 2 sites Interventional Ages 18 and up

Same-day Lenacapavir PrEP with follow-up choice to see if people stay on PrEP longer

Official title: PrEP4U: Assessing the Effectiveness of Integrated Same-Day Lenacapavir Initiation and Follow-up Choice on PrEP Persistence

Run by Massachusetts General Hospital · NCT07335289 · Data updated 2026-11-12

This trial tests whether letting people choose where they get follow-up care after starting lenacapavir PrEP helps them stay on PrEP longer.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment400 (estimated)
SponsorMassachusetts General Hospital
Academic / other
Locations2 sites (Boston, Massachusetts and 1 other locations)
StatusRecruiting
StartedJuly 17, 2026
Main results expectedJuly 1, 2027
Study endsJuly 1, 2027
Registry record updatedSeptember 23, 2026
Trial IDNCT07335289 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

HIV-negative individuals who are eligible for CDC PrEP guidelines, willing to receive injectable lenacapavir, and residing in Massachusetts with plans for 6-month follow-up.

Probably not a fit

Individuals not willing or able to receive injectable lenacapavir or not residing in Massachusetts are unlikely to benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

PrEP4U is a pragmatic randomized study evaluating real-world implementation of injectable lenacapavir for HIV PrEP. Participants start lenacapavir the same day after rapid HIV testing and then choose their follow-up location (home, community, or clinic). The primary goal is to see if follow-up location choice improves PrEP persistence compared with a clinic-only approach. Secondary analyses look at safety of rapid testing, acceptability, and participant costs; exploratory analyses assess HIV incidence and resistance. The trial aims to generate evidence to support scalable, equitable delivery of long-acting PrEP and inform policy and practice in the U.S. and globally.

Why it matters

Potential benefit: If successful, the study could lead to more people staying on PrEP by allowing flexible follow-up options that fit their lives.

How similar studies have gone: Previous PrEP delivery studies show that user-centered, flexible care models can improve uptake and persistence, though this specific lenacapavir and same-day-initiation approach is novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* HIV negative
* Eligible for HIV PrEP per CDC guidelines
* Able and willing to provide informed consent
* Willing to receive injectable lenacapavir and adhere to study procedures
* Residing inMassachusetts with expected availability for 6-month follow-up

Exclusion Criteria:

* Known HIV infection at baseline
* Contraindication to lenacapavir injection (e.g., hypersensitivity, significant drug interactions)
* Pregnancy at baseline (participants who become pregnant during the trial may remain enrolled if they choose)
* Participation in another interventional HIV prevention study
* Any condition judged by the investigator to compromise safety or study integrity

Where it's running

  • Massachusetts General Hospital Sexual Health Clinic
    Boston, Massachusetts, United States
    Recruiting
  • Brigham and Women's Hospital
    Boston, Massachusetts, United States
    Recruiting

Study contacts

  • Principal investigator: Ruanne V Barnabas, MBChB, PhD — Massachusetts General Hospital
  • Study coordinator: Meighan Krows
  • Email: mkrows@mgb.org
  • Phone: 617-726-2000

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.